Definitions of Lot Coverage and Floor Area Ratio in Concord
In the Concord Development Code, lot coverage is defined as the portion of a lot that is occupied by structures, while floor area ratio (FAR) serves as a numeric tool to limit the maximum permitted floor area on a site relative to its total lot area. These metrics are fundamental to determining the intensity and scale of development allowed on a specific parcel within the City of Concord.
Lot Coverage Definition
The Concord Development Code defines "lot coverage" as the portion of a lot that is covered by structures, including principal and accessory buildings, garages, carports, and roofed porches [Section 18.20.030].
Lot coverage specifically excludes the following features:
- Unenclosed and unroofed decks [Section 18.20.030]
- Landings [Section 18.20.030]
- Balconies [Section 18.20.030]
For residential districts, lot coverage is generally calculated as a percentage of the lot area [Table 18.30.030; Table 18.30.040].
Floor Area Ratio (FAR) Definition
The Concord Development Code defines "floor area ratio" (FAR) as the ratio of gross floor area to total lot area [Section 18.20.030]. The purpose of FAR is to limit the maximum floor area allowed on a site, which includes all structures [Section 18.20.030].
The maximum allowable floor area for all structures (measured from exterior wall surfaces) is determined by multiplying the FAR established by the applicable general plan designation by the total net area of the site, according to the following formula [Section 18.20.030]:
| Metric | Calculation Method |
|---|---|
| Maximum Allowable Floor Area | FAR × Net Site Area |
Exclusions from FAR Calculations
When calculating FAR for development projects in the City of Concord, certain areas are excluded from the "gross floor area":
- Single-car garages and carports [Section 18.20.030]
- Below-grade parking structures [Section 18.20.030]
Sections Cited
- Section 18.20.030 (Definitions)
- Table 18.30.030 (RR and RS districts – Development standards)
- Table 18.30.040 (RL, RM, and RH districts – Development standards)